Data Privacy among Organizations: Channel and Private Data in Hyperledger Fabric

Overview

Permissioned blockchain platforms differ in various aspects from permissionless ones. One of them is on data privacy. While data privacy is a broad topic, in this article we only focus on how to avoid organizations accessing unauthorized data (or avoid unauthorized organizations access certain data).

There are two ways in Hyperledger Fabric to achieve this: using Channel at network level, and using Private Data at chaincode (application) level. These have…